I am using the telerik.RadTreeView in my WPF-Application.
Beginning of september I updated the Telerik.Windows.Controls (current version is 2019.1.114.45, unfortunately, I can not say right now which version it was before).
Now we have found out, that since these update, the SelectionChanged event is no longer triggered by touch if ScrollViewer.PanningMode="VerticalOnly" is set. Mouseclicking still triggers the event.
Since this is some old (and not my code), removing ScrollViewer.PanningMode="VerticalOnly" solved this problem and I can't figure out a different behavior for scrolling, so i can go with that.
I would still be interested, if you can tell me,why this error occurred.